Index: doc/papers/concurrency/Makefile
===================================================================
--- doc/papers/concurrency/Makefile	(revision 68e9ace1ce267a16e6490d178a053859919e1241)
+++ doc/papers/concurrency/Makefile	(revision 161cdf1c71c97c71ad36951e9dbd349acb64b7d9)
@@ -81,11 +81,11 @@
 	ln -fs ../AMA/AMA-stix/ama/WileyNJD-AMA.bst .
 
-%.tex : %.fig
+%.tex : %.fig ${Build}
 	fig2dev -L eepic $< > ${Build}/$@
 
-%.ps : %.fig
+%.ps : %.fig ${Build}
 	fig2dev -L ps $< > ${Build}/$@
 
-%.pstex : %.fig
+%.pstex : %.fig ${Build}
 	fig2dev -L pstex $< > ${Build}/$@
 	fig2dev -L pstex_t -p ${Build}/$@ $< > ${Build}/$@_t